Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"rong cho voi snippets" » "trong cho voi snippets", "dong cho voi snippets", "luong cho voi snippets", "rong choi voi snippets", "rong cho moi snippets", "rong pho voi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("rong cho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rong cho voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rong cho voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rong cho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.